The prime rib entree at the Prime Rib in Washington, D.C. (Scott Suchman for The Washington Post)

The Prime Rib’s website boasts that it is one of the top five romantic restaurants in America. But a couple who recently dined at the restaurant’s Washington location disagrees: After the man and his partner asked to split an ice cream sundae, they say their server told them two men eating out of the same bowl “doesn’t go with the ambiance of the restaurant.”

Ron Gage, 55, and his partner, Henry McKinnon, 58, didn’t see it coming. They were properly attired in blazers, which the restaurant requires, for their 8:30 reservation. They had been joking around with their server Thursday evening, in what Gage said had been a nice evening until dessert.

“When it came time for dessert, we asked for one sundae with two spoons,” Gage said. Their server “said he would bring it in two separate dishes. He said ‘It wouldn’t look right with two gentlemen eating out of the same sundae. It doesn’t go with the ambiance of the restaurant.’ ”

The Post's Steven Petrow sits down with Jim Obergefell, the main plaintiff in the landmark Supreme Court case, Obergefell v. Hodges, and talks about gay marriage, equality for the transgender community and his late husband John. (Erin Patrick O'Connor/The Washington Post)

Stunned, they kept their conversation with the server to a minimum for the rest of the meal, and tipped him 15 percent — they usually tip 20 — and left the restaurant without addressing it with a manager.

“I’m kind of embarrassed to say we didn’t say anything,” McKinnon said. “It just took us back to such a shameful place, in a way.”

But after they had slept on it, they were angry about the encounter and posted about it on Facebook and Yelp.

When contacted by The Washington Post, the Prime Rib’s general manager, James MacLeod, said he was still trying to piece together the situation and hadn’t had a chance to speak to the server in depth yet.

“The waiter in question is Bulgarian, and he does speak four different languages,” said MacLeod, noting that English is not the server’s first language. “I am not sure if he got confused as to what he was saying, or how he was saying it.” [Update, Aug. 23: The server has been fired.]

He said he planned to reach out to Gage and McKinnon.

“I cannot believe that a waiter would have ever said anything like that,” MacLeod said. “There’s no way we would condone anything remotely like this.”

Other restaurants — even in liberal Washington — have been publicly shamed for slinging homophobic and transphobic remarks, often directed at LGBTQ patrons who show affection in public. In London in 2014, a lesbian couple was asked to stop kissing because they were in a “family restaurant.” When a gay couple gave each other a peck on the lips before entering an Ohio pizzeria, they were accosted by a staff member, who told them, “You better get used to this, this is Trump’s America.” (He was later fired.) A gay couple reported that they were asked to leave a Dublin restaurant for holding hands. Incidents like these make LGBTQ couples believe, as Eleanor Margolis wrote in the New Republic, that they should put the “kibosh on sexuality until after dessert. … Same-sex couples are still forced to be careful about where they choose to kiss or even hold hands.”

Even if the restaurant tries to make amends, Gage and McKinnon don’t think they’ll be back.

“It was so humiliating,” McKinnon said. “It was unbelievable how it made us feel.”

Joey Slivinski and Thomas Swartz wrote quotes about coming out as gay for their yearbook at Kearney High School. The school removed them. (KCTV5)